【求助】有MP5有MP7,但MP6哪里去了?

目前看到的個(gè)人覺(jué)得最靠譜的說(shuō)法是mp6是一個(gè)失敗的項(xiàng)目
來(lái)源:https://www.quora.com/Was-there-an-MP6-Youve-got-the-iconic-MP5-the-MP7-and-nothing-I-know-of-in-between-Is-this-a-case-similar-to-the-M2-being-forgotten-between-the-M1-Tommy-and-the-M3-Grease-gun-or-does-the-MP6-just-not-exist


另外這兩貨不知道靠譜靠譜(如圖)
另外有個(gè)好玩的,mp6是一款鋼琴(?
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